6685917 has 8 divisors (see below), whose sum is σ = 10188096. Its totient is φ = 3820512.

The previous prime is 6685907. The next prime is 6685927. The reversal of 6685917 is 7195866.

It is an interprime number because it is at equal distance from previous prime (6685907) and next prime (6685927).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6685917 - 2¹⁹ = 6161629 is a prime.

It is a super-2 number, since 2×6685917² = 89402972261778, which contains 22 as substring.

6685917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159168 + ... + 159209.

It is an arithmetic number, because the mean of its divisors is an integer number (1273512).

Almost surely, 2^6685917 is an apocalyptic number.

It is an amenable number.

6685917 is a deficient number, since it is larger than the sum of its proper divisors (3502179).

6685917 is a wasteful number, since it uses less digits than its factorization.

6685917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318387.

The product of its digits is 90720, while the sum is 42.

The square root of 6685917 is about 2585.7140213102. The cubic root of 6685917 is about 188.3881842654.

The spelling of 6685917 in words is "six million, six hundred eighty-five thousand, nine hundred seventeen".